Pipe-coupling.



No. 879,880. PATENTED FEB. 25, 1908.

D. LANDAU.

PIPE COUPLING.`

APPLICATION FILED MAR. 15. 1901.

2 SHEETS-SHEET 1.

D. LANDAU.

PIPE GOUPLING.

No. 879,880. PATENTED FEB. 25, 1908.

APPLICATION FILED MAR.15. 1907.

2 SHEETS-SHEET 2.

DWH/name Z o? (gl/wc. n Ll'oz mmf UNTE STS EN FC-,

DEWIS LANDAU, OF'SAN FRANCISCO, CALIFORNIA.

PIPE-COUPLING.

Specification of Letters Patent.

Patented Feb. 25, 190s.

Application filed March 16.1907. Serial No. 362.447. l

Couplings, of which the following is a speci-- fication.

This invention relates to improvements in pipe couplings.

The invention is an improvement upon the device set forth in my UnitedStates Letters Patent No. 813,437, dated February 27, 1906, and thespecial purpose of thisl invention is to furnish a coupling providedwith valves so arranged that the junction of the parts of the couplingautomatically opens the valves, and that the separation of the parts ofthe coupling automatically closes or allows the valves to close.

The invention is adapted to use with receptacles for water, steam, andother fluids and liquids of all kinds as well as pipes and otherconduits for liquids.

The invention also includes means for locking the members of thecoupling firmly together when joined and for readily unlocking and'allowing the separation of the parts of the coupling, and an importantfeature of the invention is a hollow valve or valves, as will behereinafter described and explained.

Referring to the drawings which accompany the specification to aid thedescription, Figure 1 is a longitudinal section, partly broken, of theparts of the coupling joined and shown in their fully closed position.Fig. 2 is an end elevation partly sectioned and broken, and showing thesame parts as are shown in Fig. 1. Fig. 3 is a section on the lines 3-3of Fig. 1. Fig. 4 is a longitudinal section, with certain parts inelevation, of a modification of the device for locking the parts of thecoupling together, and showing the part of the coupling fully home toplace and the valves open. Fig. 5 is a view of the same parts, but withthe members of the coupling separated and the valves closed, and Fig. 6

is an end view on the line 6-6 of Fig. 5.

Referring to Figs. 1, 2 and 3, the pipe 1 on the inlet side of thecoupling has a hub 2 provided with a nozzle 3, in the end of which is anopening to admit the other member of the coupling as will be hereinafterexplained. he said hub 2 is provided with a valve seat made tight by thepacking ring 7 and washer 8, and through said valve seat, packing andwasher works the hollow stem 10 provided with a valve consisting of asoft disk of rubber, leather or other suitable material 12, positionedbetween a flange on said stem 10 and the screw'7 cap 14, which isthreaded on to the solid end of said stem, 13 being holes in said stemto provide for the admission of the liquid. A spring 16 normally holdssaid valve closed against the aforesaid valve seat. The other end f saidstem 10 is provided with a disk of rubber, leather, or other similarmaterial 17, adapted to make a tight t with the end of the tube 2O whichforms a 'part of the othermember of the coupling,

and said tube 20 is provided with the hub 21 into which threads the hub22 connected with the pipe 23 which leads into a siphon or other vessel,or is connected with any other pipe, tube or conduit into which orthrough which the liquid is to be discharged, according to the use towhich the coupling is to be put. rectangular guide 25, which is providedwith parts 18 and works in the said tube 20, and said valve 26 seats ona ring or\washer 27, of rubber, leather or suitable materiahpositionedbetween said hubs 21 and 22. Said valve 26 is held normally closed bythe spring 28.

Mounted on said hub 2 are the standards 30 in which is pivoted the toothsegment 31 operated by the handle 32, and said segment A valve 26 isthreaded on the 31 meshes with a rack bar 34, which is guided 1 yadapted to engage over a shoulder 38 of said hub 22. The rear end ofsaid bar 34 is curved as indicated, for the purpose of causing the saidhook 36 to rise up out of engagement with said flange 38 when in theposition for releasing the members of the' coupling. A spring operatedthumb lever 40 pivoted on said handle 32 actuates a catch 41 whichengages a notch or notches on one of said standards, 30, for the purposeof locking said handle 32 in certain positions.

The parts operatein the following manner: When the members of thecoupling are separated the aforesaid springs 16 and 28 will cause theirrespective valves to close. To

connect the two` members of the couplingY 'with the disk 17 carried bythe aforesaid valve stem 10. Further pushing of said tube 20 into saidnozzle 3 forces the valve 12 nozzle 51, and

off its seat 6, and of course also forces the .valve 26 off its seat,thereby-opening the valves in both members of the coupling automaticalland simultaneously. Att'this time the hoo 36 is in the positlonindicated by the dotted and broken solid lines of Figll.l T

botli draws down the hook and brings it tight against the flange 38,whereby the parts of the coupling are held firmly together, and theengagement of the sto 41,w1th the notch on the aforesaid standar 30locks the parts securely in this position. To release the membersof thecoupling the operator, taking hold of lever 32 and withdrawing the stop4l out of the aforesaid notch on one of the standards 30, throws saidhandle 32 to the right to the position indicated by the dotted line inFig. 1, and thereby shifts said bar 34 to the left and lifts the flangehook 36 out of the way of said flange 38 and now the parts of thecoupling can be separated, the aforesaid valves 12 and 26 beingautomatically closed by their respective springs as the parts of thecoupling are se arated.

Referring to Fig. l, it w1 l be seen that the result of the tube 20entering the nozzle 3 and engaging the disk 17 on the outside of thetubular Valve stem 10 is, that said tube 20 will make a liquid-tightjoint with said disk 17 until after said valves 6 and 26 are closed whendisconnecting the members of the cou ling, and that ,said tube 20 willmake a iquid-tight joint with said vdisk 17 before said valves 6 and 26begin to open when connecting the members of the couplings, andtherefore this construction pre- Vents leakage, and a similarconstruction is seen in Fig. 4.

Referring to Figs. 4, 5 and 6, the valve 47 with its screw cap 45 andtubular stem 48, spring 49, washer 50, and nozzle 51, are arrangedsubstantially similar to correspond ing parts in Fig. 1, but there arenow two hooks 53 pivoted in standards 54 on said which normally tend tohold said hoo s in the position of engagin the end of the hub 57 on theother part o? the coupling. The

provided with sprin s y tube- 58 of said hub 57 is ada ted to enter theend of said nozzle 51'and e ect the opening of the two arts of thecoupling in the manner hereto ore described, and in said tube 58 worksthe square stem 61 of the valve 60 which is normally pressed home toits'seat 63 by its spring 65, 67 being a pipe leading to a si hon orother vessel, or being connected wit a pipe or conduit or otherreceptacle into whic iquid is to be delivered. It will be manifest thatwhen the tWo parts of the coupling are brought together the' beveledends of said hooks 53 will snap over the preferably beveled ends of thehub 57,

and will thereby hold the parts of the coup` ling in their closedposition, the two valves being at the same time open. To release theparts of the coupling, the operator draws the right end of said hooks 53together, I

thereby opening the hooks, when the parts of the coupling may beseparated. As theA parts of the coupling'become separated the aforesaids rings 49 and 65 close their respective va ves.

It will be evident that all forms of .the

'The combination in a coupling, of one member provided with a valveseat,a tubular valve in said member adapted to normally close on said seat, asecond member.

of said couplin provided with a valve seat and with a tu ular extensionadapted tol enter the end of saidrst named member and engage saidtubular valve, and a valve in said second member ada ted vto normallyclose on saidlast named va ve seat and havin a stem ada ted to engagesaid tubular va ve, a hook or holding said' members in closed position,and a rack and inion for operating said hook, substantialy as de''scribed.

Signed at New York city this 12th day of March 1907.v

LEWIS LANDAU.

Witnesses: D. WALTER BROWN, WALTER N. HARRIS.

